ssdt dacpac：如何防止 dacpac 在删除包含数据的表中的列时产生错误

Question

I am dropping a column in a table xxx with data. The DACPAC is generating the checking as follow.

IF EXISTS (select top 1 1 from [dbo].[xxx])
    RAISERROR (N'Rows were detected. The schema update is terminating because data loss might occur.', 16, 127) WITH NOWAIT

All the data migration has been done in pre-deployment script. Currently I have comment it out manually.

How to prevent it from auto generating?

Answer 1

Uncheck Block incremental deployment if data loss might occurred in VS\\Publish\\Advanced\\General.

Answer 2

对于那些使用 sqlpackage 部署 dacpac 或使用 Azure devops 的人，请在附加参数中设置以下内容，它应该可以工作。

/p:BlockOnPossibleDataLoss=False

Answer 3

this is most likely due to a dependency like a trigger.

If you aren't sure what object is causing it, you can use the following script to identify

select * from sys.objects
where Object_id = (OBJECT_ID('<name of object blocking'))